CN111069283A

CN111069283A - Redundant drive 3SPS + C type parallel rolling mill

Info

Publication number: CN111069283A
Application number: CN201911412900.6A
Authority: CN
Inventors: 路懿; 路扬; 叶妮佳; 常泽锋
Original assignee: Yanshan University
Current assignee: Yanshan University
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-04-28
Anticipated expiration: 2039-12-31
Also published as: CN111069283B

Abstract

The invention provides a redundant drive 3SPS + C type parallel rolling mill, comprising: the device comprises a machine base, a movable table, a main driving rod, an upper roller, a lower roller and an auxiliary driving rod, wherein the movable table is an n-shaped body consisting of a cross beam I and two symmetrical stand columns I perpendicular to the cross beam I, and the machine base consists of a stand column II and a cross beam II; a longitudinal hole is formed in the cross beam II, and the two stand columns I are inserted into the longitudinal hole; two ends of the main driving rods on two sides are respectively connected to the cross beam I and the cross beam II; two ends of the upper roller are respectively and rotatably connected with the transverse through holes I of the two stand columns I; two ends of the lower roller are respectively and rotatably connected with a transverse through hole II of the cross beam II; one end of the lower roll, which extends out of the transverse through hole II, is connected with a motor; a metal plate is clamped between the upper roller and the lower roller; the top of the stand column II is provided with an upper hinged support, the middle of the cross beam I is provided with a middle hinged support, and the upper hinged support and the middle hinged support are respectively connected with two ends of the auxiliary driving rod. The invention has simple and compact structure, can overcome the problems of uneven thickness and deviation of the metal plate and meet the requirements of rolling the metal plates with different thicknesses.

Description

Redundant drive 3SPS + C type parallel rolling mill

Technical Field

The invention relates to the technical field of metallurgical equipment, in particular to a redundant drive 3SPS + C type parallel rolling mill.

Background

A rolling mill is a main device for processing cold-rolled strips, and plate shape control is one of core control technologies. In recent years, advanced cold-rolled strip rolling mills and corresponding strip shape control technologies are emerging and perfected day by day. The development of the plate shape control technology promotes the equipment progress and the industry upgrade of the cold-rolled plate strip industry, and the production efficiency and the benefit are greatly improved. The plate shape refers to the warping degree of the plate and strip material and the distribution of residual stress inside the reaction plate and strip material. If residual stress exists in the plate and strip material, the plate shape is poor. If residual stress is not enough to cause the plate strip to warp, the plate shape is poor and is called as 'potential'; if the sheet strip is deformed and warped due to residual stress, the sheet shape is poor in appearance. The common plate shape defects include various forms such as edge waves, middle waves, single-edge waves, double-rib waves and composite waves, and are mainly caused by internal stress generated by uneven extension of all parts of a strip in the rolling process. In order to obtain high quality rolled strip, it is necessary to adjust the roll gap of the rolls at any time to suit the incoming sheet crown and to compensate for the influence of various factors on the roll gap. The rolls produce the desired target strip shape with only one optimum crown for strips of different widths, thicknesses, alloys. Therefore, the essence of strip shape control is the control of the bearing roll gap, unlike thickness control, which only controls the opening precision at the midpoint of the roll gap, which must control the full roll gap shape over the span of the width of the rolled product.

The methods for improving and increasing the plate shape control level comprise the following steps: from the aspect of equipment configuration, for example, an advanced plate shape control means is adopted, the rigidity of the rolling mill is increased, and the like; the method comprises the steps of setting the original convexity of the roller, and distributing deformation and pass in terms of process configuration. The conventional plate shape control means mainly comprise a roll bending control technology, a roll tilting control technology, a sectional cooling control technology and the like. In recent years, advanced strip shape control technologies such as a roll drawing technology (HC mill and UC series mill), a roll expanding technology (VC mill and IC mill), a rolling force distribution control technology (DSR dynamic plate roll), and a roll edge thermal spraying technology have been increasingly widely used. The roll drawing technology is also called HC rolling mill roll transverse moving plate shape control system. The HC mill was a new 6-roll mill developed jointly by hitachi corporation and new-day iron and steel corporation in the 70 th century. HC (high crown) is the high performance roll crown. The rolling mill is based on a common 4-roller rolling mill, a pair of axially movable intermediate rollers are arranged between a supporting roller and a working roller, and the axial moving directions of the intermediate rollers are opposite. The HC rolling mill eliminates a harmful contact area between the supporting roll and the working roll by the transverse movement of the middle roll, improves the plate shape control capability of rolling, and is suitable for rolling strips with any width. The control technology of the cross plate shape of the rolling mill rollers. The design principle of the roller crossing system is the same as that of a working roller with convexity. By adjusting the intersection angle of the rollers, the roller gap is larger at the position farther from the center of the roller, and the control of the appearance of the roller gap is realized.

The existing rolling mill equipment comprises: the control on the local thickening of the edge of the hot-rolled strip steel is realized by optimizing the original roll profile curve of the working roll of the finishing mill group; the roll online crossing mechanism of the PC rolling mill is used, two ends of the roll are connected with a first bearing seat and a second bearing seat, a plane swing mechanism is arranged on the first bearing seat and is in close contact or connection with one end of a rolling mill frame, a plane deflection mechanism is arranged on the second bearing seat and is in close contact or connection with the other end of the rolling mill frame, and online crossing adjustment is realized; a working roll profile curve is designed, so that the crossing angle and the roll bending force are reduced, and the stability of the rolling mill and the plate convexity control capability of the PC rolling mill are improved; by adopting the data collected under the normal working condition, the transverse distribution value of the thickness of the strip steel outlet of the PC rolling mill, the transverse distribution value of the front and rear tension and the like are obtained, and the prediction is provided for the rolling pressure and the plate convexity. The rolling mill equipment has various characteristics, but the working roll with convexity is difficult to adjust, has poor adaptability to different materials, and has complex calculation of the convexity of the working roll; the structure of installing a pair of axially movable intermediate rollers between the supporting roller and the working roller is complex; the existing roller cross plate shape control technology has the defects of complex structure and high control difficulty. On the premise of improving and improving the plate shape control level, the effort of a mechanism designer is always to simplify the structure and the control process of the rolling mill equipment.

Therefore, in view of the above, there is a need for a new rolling mill to solve the deficiencies of the prior art.

Disclosure of Invention

According to the method, the working roll with the convexity is difficult to adjust, has poor adaptability to different materials, and is complex in convexity calculation; the structure of installing a pair of axially movable intermediate rollers between the supporting roller and the working roller is complex; the existing rolling mill adopting the roller cross plate shape control technology has the technical problems of relatively complex structure and great control difficulty, and provides a redundant drive 3SPS + C type parallel rolling mill. The invention mainly utilizes the extension of the auxiliary driving rod to change the horizontal included angle between the upper roller and the lower roller so as to overcome the problems of uneven thickness and deviation of the metal plate; the two main driving rods are synchronously stretched and retracted, and the distance between the upper roller and the lower roller is adjusted, so that the requirements of rolling metal plates with different thicknesses are met, and the shape and centering of the metal plates are easily controlled in the rolling process.

The technical means adopted by the invention are as follows:

a redundant drive 3SPS + C type parallel mill comprising: the movable table is an n-shaped body consisting of a cross beam I and two symmetrical stand columns I perpendicular to the cross beam I, the base consists of a stand column II and a cross beam II, and the stand column II is positioned on one side of the cross beam II; the beam II is provided with a longitudinal hole with an upward opening and a slot, and two stand columns I arranged at intervals are inserted into the longitudinal hole;

a left hinged support and a right hinged support are symmetrically arranged at two ends below the cross beam I, and a first hinged support and a second hinged support are symmetrically arranged at two ends above the cross beam II; the left hinged support and the first hinged support are respectively connected to two ends of the main driving rod on one side, and the right hinged support and the second hinged support are respectively connected to two ends of the main driving rod on the other side;

the upper roller is positioned in a space formed between the two upright posts I, and two ends of the upper roller are respectively in rotating connection with the transverse through holes I arranged on the two upright posts I;

the lower roller is orthogonal to the longitudinal hole, and two ends of the lower roller are respectively in rotating connection with a transverse through hole II formed in the cross beam II; one end of the lower roller, which extends out of the transverse through hole II, is connected with a motor, and the motor is fixed on the outer wall of the cross beam II;

a metal plate is clamped between the upper roller and the lower roller;

the top of the upright post II is provided with an upper hinged support, the middle of the cross beam I is provided with a middle hinged support, and the upper hinged support and the middle hinged support are respectively connected with two ends of the auxiliary driving rod;

in the working process, the movable table is driven to rotate by the expansion of the auxiliary driving rod, and the horizontal included angle between the upper roller and the lower roller is changed; and the two main driving rods stretch and retract to adjust the distance between the upper roller and the lower roller.

Further, the movable table is connected with the base cylindrical pair; two ends of the two main driving rods are respectively connected with the movable table and the engine base ball pair; two ends of the auxiliary driving rod are respectively connected with the movable table and the base ball pair; the upper roller is connected with the movable table revolute pair; the lower roller is connected with the stand rotating pair, and a motor shaft of the motor is connected with the lower roller through a coaxial key.

Further, in an initial state, the central axes of the upper roller and the lower roller are parallel; and the central axes of the two main driving rods are parallel, and are perpendicular to the central axes of the upper roller and the lower roller and are positioned in the same plane.

Furthermore, the two main driving rods have the same length and keep synchronous extension and retraction.

Furthermore, the outer sides of the two stand columns I are outer cylindrical arc surfaces, and the outer cylindrical arc surfaces are connected with inner cylindrical arc surfaces on two sides in the longitudinal hole in a matched mode.

Compared with the prior art, the invention has the following advantages:

1. the redundant drive 3SPS + C type parallel rolling mill provided by the invention can change the horizontal included angle of the upper roller and the lower roller when the auxiliary drive rod stretches during rolling so as to overcome the problems of uneven thickness and deviation of metal plates.

2. According to the redundant drive 3SPS + C type parallel rolling mill provided by the invention, when the two main drive rods stretch synchronously, the distance between the upper roller and the lower roller can be adjusted, so that the requirements of rolling metal plates with different thicknesses are met; the shape and the centering of the metal plate are easy to control in the rolling process.

3. The redundant drive 3SPS + C type parallel rolling mill provided by the invention has the advantages of small diameter of the upper roller, small total mass of the upper roller and the movable table, simple and compact structure.

In conclusion, the technical scheme of the invention can solve the problems that the working roll with convexity in the prior art is difficult to adjust, has poor adaptability to different materials and is complex in convexity calculation; the structure of installing a pair of axially movable intermediate rollers between the supporting roller and the working roller is complex; the existing roller cross plate shape control technology has the problems of more complex structure and high control difficulty.

For the reasons, the invention can be widely popularized in the fields of metallurgy and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a front view of a redundant drive 3SPS + C type parallel rolling mill of the present invention.

FIG. 2 is a top view of the redundant drive 3SPS + C type parallel rolling mill of the present invention.

In the figure: 1. a machine base; 2. moving the table; 3. a main drive rod; 4. an auxiliary drive rod; 5. upper roll; 6. a lower roll; 7. a motor; 8. a metal plate.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

As shown, the present invention provides a redundant drive 3SPS + C type parallel rolling mill, comprising: the device comprises a machine base 1, a movable table 2, a main driving rod 3, an upper roller 5, a lower roller 6 and an auxiliary driving rod 4, wherein the movable table 2 is an n-shaped body consisting of a cross beam I and two symmetrical upright columns I perpendicular to the cross beam I, the machine base 1 consists of an upright column II and a cross beam II, and the upright column II is positioned on one side of the cross beam II; the beam II is provided with a longitudinal hole with an upward opening and a slot, and two stand columns arranged at intervals are inserted into the longitudinal hole;

a left hinged support and a right hinged support are symmetrically arranged at two ends below the cross beam I, and a first hinged support and a second hinged support are symmetrically arranged at two ends above the cross beam II; the left hinged support and the first hinged support are respectively connected to two ends of the main driving rod 3 on one side, and the right hinged support and the second hinged support are respectively connected to two ends of the main driving rod 3 on the other side;

the upper roller 5 is positioned in a space formed between the two upright posts I, and two ends of the upper roller 5 are respectively and rotatably connected with transverse through holes I arranged on the two upright posts I;

the lower roller 6 is orthogonal to the longitudinal hole, and two ends of the lower roller 6 are respectively in rotary connection with a transverse through hole II formed in the cross beam II; one end of the lower roller 6, which extends out of the transverse through hole II, is connected with a motor 7, and the motor 7 is fixed on the outer wall of the cross beam II;

a metal plate 8 is clamped between the upper roller 5 and the lower roller 6;

the top of the upright post II is provided with an upper hinged support, the middle of the cross beam I is provided with a middle hinged support, and the upper hinged support and the middle hinged support are respectively connected with two ends of the auxiliary driving rod 4;

in the working process, the movable table 2 is driven to rotate by the extension and retraction of the auxiliary driving rod 4, and the horizontal included angle between the upper roller 5 and the lower roller 6 is changed; and the two main driving rods 3 stretch and retract to adjust the distance between the upper roller 5 and the lower roller 6.

Example 1

As shown in fig. 1-2, the redundant drive 3SPS + C type parallel rolling mill includes a movable table 2, a stand 1, two main drive rods 3, an auxiliary drive rod 4, an upper roller 5, a lower roller 6, a motor 7 and a metal plate 8. The movable table 2 is an n-shaped body formed by a cross beam I and two symmetrical stand columns I, a left hinged support and a right hinged support are arranged below two horizontal extending ends of the cross beam I, a middle hinged support is arranged in the middle of the cross beam I, an upper through hole with a downward opening is longitudinally formed between the two stand columns I along the cross beam I, and outer cylindrical cambered surfaces of the orthogonal upper through holes are arranged on the outer sides of the two stand columns I. The engine base 1 is formed by an upright post II and a cross beam II into a whole, an upper hinged support is arranged on the upright post II, a first hinged support and a second hinged support are arranged on the cross beam II, and an inner cylindrical cambered surface of a longitudinal hole with an upward opening and an orthogonal longitudinal hole is longitudinally arranged along the cross beam II. The outer cylindrical cambered surface of the movable table 2 is connected with the inner cylindrical cambered surface cylindrical pair of the engine base 1. Two ends of a main driving rod 3 arranged on the left side are respectively connected with a left hinged support of the movable table 2 and a first hinged support ball pair of the machine base 1, and two ends of a main driving rod 3 arranged on the right side are respectively connected with a right hinged support of the movable table 2 and a second hinged support ball pair of the machine base 1. Two ends of the auxiliary driving rod 4 are respectively connected with the middle hinged support of the movable platform 2 and the upper hinged support ball pair of the machine base 1. Two ends of the upper roller 5 are connected with an upper through hole revolute pair of the movable table 2. The motor 7 is fixedly connected with the outer wall of the machine base 1, a motor 7 shaft of the motor 7 is in coaxial key connection with the lower roller 6, and two ends of the lower roller 6 are connected with a longitudinal hole revolute pair of the machine base 1.

In an initial state, the central axes of the upper roller 5 and the lower roller 6 are parallel to each other; the metal plate 8 is positioned between the upper roller 5 and the lower roller 6; the two main driving rods 3 are the same in length, have central axes parallel to each other, are perpendicular to the central axes of the upper roller 5 and the lower roller 6, and are positioned in the same plane as the central axes of the upper roller 5 and the lower roller 6. During rolling, the elastic bending deformation of the upper roller 5 and the lower roller 6 can cause the thickness of the middle part and the thinness or deviation of two sides of the metal plate 8. When the auxiliary driving rod 4 stretches, the horizontal included angle between the upper roller 5 and the lower roller 6 can be changed, so that the problems of uneven thickness and deviation of the metal plate 8 are solved. When the two main driving rods 3 keep synchronous extension, the distance between the upper roller 5 and the lower roller 6 can be adjusted, the requirements of rolling metal plates 8 with different thicknesses are met, and the shape and centering of the metal plates 8 are easily controlled in the rolling process.

According to the mechanism principle, the movement of the mechanism can be realized by only one main driving rod 3, but the structure can cause unbalance loading, low rigidity, unreasonable structure and the like. Therefore, the present invention adopts a redundant driving manner of two main driving rods 3. In the aspect of control technology, the control method is easy to realize, the lengths of the two main driving rods 3 are kept the same and the two main driving rods stretch synchronously, so that the problems of unbalance loading, low rigidity, unreasonable structure and the like can be avoided.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A redundant drive 3SPS + C type parallel rolling mill is characterized by comprising: the device comprises a base (1), a movable table (2), a main driving rod (3), an upper roller (5), a lower roller (6) and an auxiliary driving rod (4), wherein the movable table (2) is an n-shaped body consisting of a cross beam I and two symmetrical upright columns I perpendicular to the cross beam I, the base (1) consists of an upright column II and a cross beam II, and the upright column II is positioned on one side of the cross beam II; the beam II is provided with a longitudinal hole with an upward opening and a slot, and two stand columns I arranged at intervals are inserted into the longitudinal hole;

a left hinged support and a right hinged support are symmetrically arranged at two ends below the cross beam I, and a first hinged support and a second hinged support are symmetrically arranged at two ends above the cross beam II; the left hinged support and the first hinged support are respectively connected to two ends of the main driving rod (3) on one side, and the right hinged support and the second hinged support are respectively connected to two ends of the main driving rod (3) on the other side;

the upper roller (5) is positioned in a space formed between the two upright posts I, and two ends of the upper roller (5) are respectively and rotatably connected with the transverse through holes I arranged on the two upright posts I;

the lower roller (6) is orthogonal to the longitudinal hole, and two ends of the lower roller (6) are respectively in rotating connection with a transverse through hole II formed in the cross beam II; one end of the lower roller (6) extending out of the transverse through hole II is connected with a motor (7), and the motor (7) is fixed on the outer wall of the cross beam II;

a metal plate (8) is clamped between the upper roller (5) and the lower roller (6);

the top of the upright post II is provided with an upper hinged support, the middle of the cross beam I is provided with a middle hinged support, and the upper hinged support and the middle hinged support are respectively connected with two ends of the auxiliary driving rod (4);

in the working process, the movable table (2) is driven to rotate by the extension and retraction of the auxiliary driving rod (4), and the horizontal included angle between the upper roller (5) and the lower roller (6) is changed; the two main driving rods (3) stretch and retract to adjust the distance between the upper roller (5) and the lower roller (6).

2. A redundant drive 3SPS + C type parallel rolling mill according to claim 1, wherein said movable table (2) is coupled with said stand (1) cylindrical pair; two ends of the two main driving rods (3) are respectively connected with the movable table (2) and the base (1) through ball pairs; two ends of the auxiliary driving rod (4) are respectively connected with the movable table (2) and the base (1) through ball pairs; the upper roller (5) is connected with the rotating pair of the movable table (2); the lower roller (6) is connected with a rotating pair of the machine base (1), and a motor (7) shaft of the motor (7) is connected with the lower roller (6) through a coaxial key.

3. A redundant driven 3SPS + C parallel rolling mill according to claim 1 or 2 wherein, in an initial state, the upper roll (5) is parallel to the central axis of the lower roll (6); the central axes of the two main driving rods (3) are parallel, and are perpendicular to the central axes of the upper roller (5) and the lower roller (6) and are positioned in the same plane.

4. A redundant drive 3SPS + C parallel rolling mill according to claim 3 wherein the two main driving rods (3) have the same length and keep synchronous extension and retraction.

5. The redundant driving 3SPS + C type parallel rolling mill according to claim 1 or 2, wherein the outer sides of the two columns I are outer cylindrical arc surfaces, and the outer cylindrical arc surfaces are matched and connected with inner cylindrical arc surfaces on two sides in the longitudinal through hole.